KR970019513A

KR970019513A - TV's Illumination-adaptive subtitle position half blanking processing device

Info

Publication number: KR970019513A
Application number: KR1019950030609A
Authority: KR
Inventors: 김성준
Original assignee: 배순훈; 대우전자주식회사
Priority date: 1995-09-19
Filing date: 1995-09-19
Publication date: 1997-04-30

Abstract

본 발명은 텔레비전의 영상화면상에 자막이 화면표시되는 중에, 그 자막의 화면표시부위에 외부로 부터의 강한 직사광이 도달되는 경우에는 사용자가 자막을 용이하게 읽을 수 없게 된다는 단점을 해결하기 위해 이루어진 것으로, 텔레비전의 화면에 표시되는 자막의 표시부위의 조도를 감지하여 높은 조도가 검출되면 자막이 표시되는 화면 부분을 반블랭킹시킬 수 있도록 하는 텔레비전의 조도적응형 자막위치 반블랭킹처리장치를 제공한다.The present invention is made to solve the disadvantage that the user cannot easily read the subtitles when strong direct light from the outside arrives on the screen display portion of the subtitles while the subtitles are displayed on the video screen of the television. The present invention provides an apparatus for adaptively illuminating subtitle position anti-blanking processing of a television which detects illuminance of a display portion of a caption displayed on a screen of a television and makes it possible to semi-blank the screen portion on which the caption is displayed when high illuminance is detected.

그에 따라 본 발명은 휘도신호에 포함된 자막신호를 추출하여 화면표시 가능하도록 하는 자막신호처리수단(8,10,12,16,18,20)을 갖춘 텔레비전에 있어서; 자막이 표시되는 화면부위의 조도를 감지하는조도감지부(2)와, 상기 감지된 조도감지치를 기준치와 비교하여 높은 레벨의 조도를 검출하는 조도레벨검출부(4), 상기 조도레벨검출부(4)에서 높은 레벨의 조도가 검출되면 자막이 표시되는 화면부분을 반블랭킹시키기 위한 제어를 수행하는 제어부(6), 상기 자막처리수단(8,10,12,16,18,20)의 자막신호처리동작을 위한 클럭신호를 발생함과 더불어, 그 자막신호처리동작과 동기적인 클럭신호를 상기 제어부(6)에 공급하는 클럭신호발생부(14), 상기 제어부(6)에 의해 동작이 인에이블되어 화면의 반블랭킹을 위한 블랭킹신호를 발생하는 블랭킹신호발생부(22) 및, 상기 제어부(6)의 스위칭제어하에 상기 반블랭킹을 위한 블랭킹신호가 자막의 화면표시부위에 선택적으로 인가되도록 스위칭절환되는 스위칭절환부(24)를 구비하여 구성된 것을 특징으로 한다.Accordingly, the present invention is directed to a television having caption signal processing means (8, 10, 12, 16, 18, 20) for extracting a caption signal included in a luminance signal and displaying the screen; An illuminance detection unit 2 for detecting illuminance of a screen portion where a caption is displayed, an illuminance level detection unit 4 for detecting a high level illuminance by comparing the detected illuminance detection value with a reference value, and the illuminance level detection unit 4 The subtitle signal processing operation of the control unit 6 and the subtitle processing means 8, 10, 12, 16, 18, and 20 performing control for semi-blanking the screen portion on which the subtitle is displayed when high level illumination is detected in In addition to generating a clock signal for the clock signal, the clock signal generator 14 and a controller 6 for supplying a clock signal synchronous with the caption signal processing operation to the controller 6 are enabled. A blanking signal generator 22 for generating a blanking signal for anti-blanking of the switching, and a switching for switching the blanking signal for anti-blanking to be selectively applied to the screen display portion of the subtitle under switching control of the controller 6 Switching section (24 It is characterized by comprising a).

Description

TV's Illumination-adaptive subtitle position half blanking processing device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 텔레비전의 조도적응형 자막위치 반블랭킹처리장치의 구성을 나타낸 블럭구성도.1 is a block diagram showing the configuration of an apparatus for illuminating adaptive caption position anti-blanking according to the present invention.

제2도는 제1도에 도시된 조도감지부와 조도레벨검출부의 상세한 회로구성을 나타낸 도면.FIG. 2 is a diagram showing a detailed circuit configuration of the illuminance detecting unit and the illuminance level detecting unit shown in FIG.

제3도는 제2도에 도시된 조도감지센서가 화면의 자막표시위치부근에 설치된 일예를 나타낸 개략도면.3 is a schematic diagram showing an example in which an illuminance sensor shown in FIG. 2 is installed near a caption display position on a screen;

Claims

In a television equipped with caption signal processing means (8, 10, 12, 16, 18, 20) for extracting the caption signal included in the luminance signal and displaying the caption signal, the illumination for detecting the illuminance of the screen portion where the caption is displayed When the illuminance level detecting unit 2, the illuminance level detecting unit 4 which detects a high level of illuminance by comparing the detected illuminance detection value with a reference value, and the illuminance level detecting unit 4 detects a high level of illuminance, a subtitle is displayed. The control unit 6 which performs control for half blanking the screen portion, generates a clock signal for the caption signal processing operation of the caption processing means 8, 10, 12, 16, 18, and 20, A blanking signal for generating a blanking signal for half blanking of the screen by enabling a clock signal generator 14 for supplying a clock signal synchronous to a signal processing operation to the controller 6 and the operation by the controller 6. The generator 22 and the switch of the controller 6; And a switching switching unit (24) for switching the blanking signal for half-blanking to be selectively applied to the screen display portion of the subtitle under the control of the illumination.

The method of claim 1, wherein the illuminance detection unit 2 includes a plurality of illuminance detection sensors (2A, 2B) installed on one side and the other side of the screen portion of the subtitle display to detect the ambient illuminance, respectively, The illuminance level detecting unit 4 receives a detection signal according to the illuminance sensing operation of the illuminance sensor 2A on one side and compares the comparator 4A with a reference voltage Vrefl and illuminance on the other side. And a comparator (4B) for receiving a detection signal according to the illumination detection operation of the detection sensor (2B) and comparing it with a reference voltage (Vref2).

※ Note: The disclosure is based on the initial application.